A Kind of Logarithmic Function Hardware Encryptor and Decryptor

Abstract

This paper presents the realization of a kind of hardware encryptor and decryptor, which is based on Logarithmic Function principle. It shows how to design the encryption circuit and the decryption circuit by the sequential circuit. It had been designed in VHDL and simulated by Modelsim software, and then synthesized as well as realized on the FPGA chip EP2C5T144 by QuartusII software, last finished the test.